Case and the method of pbodttcing the same



w. A. OBANNON VALVE CASE AND THE METHOD OF PRODUCING THE SAME Nov. 5, 1929. Re. 17,481

Original Filed May 75, 1928 Reissued Nov. 5, 1929 UNITED STATES PATENT OFFICE...

WALTER A. OBANNON, OF TULSA, OKLAHOMA, .ASSIGNOB TO WALTER OBANNON-CO-, OF TULSA, OKLAHOMA VALVE CASE THE ZNIETHOID OF PRODUCING THE SAME- Orig'inal application filed Kay 18, 1927, Serial No. 192,370. Patent No. 1,714,434, dated May 21, 1929,

which was divided and application filed May 3, 1928, May 21, 1929. Application for reissue filed 111176,

This invention relates to a valve case and the method of producing the same, and comprising a division of my application for working barrel filed May 18, 1927, Serial No.

192,370, issued May 21, 1929, N 0. 1514, 134.

This invention relatesto a class of valves used in oil pumpingroperations where very high pressures are present and the case is adapted for use either as a standing or a' working valve. In this type of valve the ball member is usually confined within a cage or crown and is capable of more or less movement laterally thereof in its seating and unseating movement incident to the pumping operation wherein the direction of pressure is changed.

Under such conditions it is highly important that the valve member or ball be accurately guided toward and from its seat to prevent improper seating and consequent leakage,

and such guiding means must be construete to permit the maxium flow of liquid to pass the valve when in its raised position.

It is furthermore essential thatthe valve which must be so disposed as not to interfere with the unrestricted flow of liquid through the valve case. The case for such a valve difiers from the usual crown or cage with side discharge openings in that the so entire flow must be through the valve case in a practically direct path to the connecting pipe.

' This invention provides a novel construction of the valve case formed atits lower portion with a having radial contact faces extendmgfrom a valve seat and terminating at a point below a transverse stop bar disposed tolimit the opening travel of the valve. The chamber surrounding this bar has deflecting walls at its upper end so that the circumferential current of liquid passing upward through the spaces about this bar and is then directed into a solid stream entering the outlet pipe.

The invention also contemplates the production ofthis improved valve'case by a novel method of manufacture consisting in casting a tubular body with interiorly extending ribs and machining or -contact face of said be limited in its upward travel by a stop bar seriesof longitudinal ribs 1 between the ribs has a free passage finishing the Serial 110. 274,857. Original No. 1,714,398, dated 1929. Serial No. 376,417.

surface of substantially the diameter of the cooperating valve member.

The invention has for an object to provide a novel and improved construction of valve ribs to provide a guide case having coupling connections at its op- 1 posite ends and inwardly extendin gui ribs spaced from and terminating %EIl8B.th atransverse' stop bar with the inner walls of the case above said bar inwardly deflected to merge a circumferential stream of liquid into a solid body at the outlet from the case.

A further object of the invention is to pro vide a novel method of producing a valve case which consists in forming a tubular body with interiorly extending ribs, each provided with an apex and removing such apex by a machining operation to produce a finished contact face having a curve substantially corresponding to that of the cooperating ball valve member.

Other and further objects and advantages of the invention will be hereinafter set forth andthe novel features thereof defined by the appended claims.

In the drawing:

Fig. 1 is a central vertical section through the valve case with a part in elevation;

Fig. 2 is a top plan;

Fig. 3 is a sectionon Fig. 4 is a similar view on line 4 -4 ofFig. 1; and

Fig. 5 is a detail section of one valve rib.

Like numerals refer to like parts'inthe several figures of the drawing.

In the various applications of the case the coupling connections are varied, for instance, in its use as a traveling valve, or a standing valve, and in the present instance it is shown as a standing va ve.

line 3 of Fig.-

The case 10 is formed at its upper end :val've casing having atone end the lower portion of the case and from this flange a series of longitudinally extending ribs 15 project radially inwardly of the case. The inner or contact face 16 of'these ribs is finished'to provide an accurate and smooth contact with a ball member 17, indicated by dotted lines in Fig. 1. The upper ends of these ribs are beveled, as at 18,. and they terminate beneath a transverse stop bar 19 disposed in the chamber 20 and spaced above the beveled ends of the ribs. This bar is cast integral with the case and the upper wall of the chamber above the bar is inclined in wardly, as at 21, to deflect the circumferentially rising current of fluid into a solid body at the outlet connection 11. This provides for a free and maximum'fiow of liquid directly through the case and about the valvewhen in unseated position. i

To facilitate the production of the valve case. by a casting operation and the subsequent removal'ofthe pattern, one wall 25 of the ribs is formed straight and the "opposite wall 23 inclined .while the spaces between these walls form' circumferential channels about the ball member guided by the ribs. The ribs are preferably initially m'olded with an. apex, as shown in F ig. 5, and this apex.

is subsequently removed by a' finishing or grinding operation which provides"the contact face of-th-e rib having a slight concavity substantially corresponding to the "spherical contour of the ball valve. I

In the method of producing these castings they may be formed from steel,'in which event it is desirable to subject them to a pickling operation in order to removethe core sand before the machining of the ribsand to reduce the tool expense in the production of the complete case. By this method of production the valve case is provided withribs ribs extending longitudinally of said casing and terminatlng intermediate the length of at a point spaced from the ,discharge passage, and stop means also disposed in spaced relation to the discharge passage and at a point to prevent movement of the valve member beyond the guide ribs. 3, The method of forming a valve case consisting in casting a tubular body with spaced interiorly extending ribs, and finishing the-freeinner edges of said ribs to form a guide surface of substantially the diameter of the cooperating valve member.

4: The method of forming a valve case consisting in casting a tubular body with interio'rly extending ribs each provided with an apex, and removing the apex of said ribs to form a finished curved contact face for .a cooperating ball member. a

In testimony whereof I afiix my signature.

WALTER A; OBANN ON.

which accurately guide thevalve therein and .thus materially reduce the wear upon the ball and seat as well as the loss due to leaka'ge of liquid passing the valve when not properly seated. V

The construction of the case provides'for the maximur'n flow of fluid thcrethrough in a directstream which is merged from its circumferential path 'abonf'a the ball valve into a solid body at the discharge and such result is facilitated by the spacing of the ribs below the stop bar to provide a clear chamber surtion have been'shown and described, the inalterationsmay be made without departing fromthe spirit of the invention, asdetined by the followingclaims.

- hat I claim is i A well pump fittin g comprising a tubular a valve c I I a valve member coacting with said seat, g idc .rounding the same having its upper wall in- 'clined toward the outlet. I

l/Vhile the specific details of the construc- 

